﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


class ShowSign
{
    static void Main(string[] args)
    {
        Console.WriteLine("Enter A");
        int a = Convert.ToInt32(Console.ReadLine());
        Console.WriteLine("Enter B");
        int b = Convert.ToInt32(Console.ReadLine());
        Console.WriteLine("Enter C");
        int c = Convert.ToInt32(Console.ReadLine());
        string sign = "+";
        if ((a == 0) || (b == 0) || (c == 0))
        {
            sign = "0";
        }
        else if ((a < 0) && (b < 0) && (c < 0))
        {
            sign = "-";
        }
        else if ((a < 0) && (b > 0) && (c > 0))
        {
            sign = "-";
        }
        else if ((a > 0) && (b < 0) && (c > 0))
        {
            sign = "-";
        }
        else if ((a > 0) && (b > 0) && (c < 0))
        {
            sign = "-";
        }
        Console.WriteLine("Product is: {0}", sign);
    }
}
